docs: def SetMarkerStyle(self, style):
          """
          *style* may be any marker style understood by ROOT or matplotlib.
  
          For full documentation of accepted *style* arguments, see
          :class:`rootpy.plotting.style.MarkerStyle`.
          """
          self._markerstyle = MarkerStyle(style)
          if isinstance(self, ROOT.TAttMarker):
              ROOT.TAttMarker.SetMarkerStyle(self, self._markerstyle('root'))